Q. The most penetrating radiation out of the following is
A) $X$-rays
B) $\beta$-rays
C) $\alpha$-particles
D) $\gamma$-rays
Explanation
(d) Penetration is directly proportional to the energy of radiations
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.